Substantial gainful activity (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Substantial gainful activity" in English language version.

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2,142^nd place

archive.org

Glennen, [edited by] Sharon L.; contributions, Denise C. DeCoste; with (1997). The handbook of augmentative and alternative communication ([Nachdr.] ed.). San Diego: Singular Pub. Group. pp. 350. ISBN 1565936841. {{cite book}}: |first= has generic name (help)
Morton, David A. (2010). Nolo's guide to social security disability: getting & keeping your benefits (5th ed.). Berkeley, CA: Nolo. pp. 20–21. ISBN 978-1413311044.

"Substantial Gainful Activity". Social Security Administration. Retrieved November 4, 2020.